<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Node对象</title>
    <style>

        div{

            border: 1px solid red;

        }
        #div1{
            width: 200px;
            height: 200px;
        }

        #div2{
            width: 100px;
            height: 100px;
        }


        #div3{
            width: 100px;
            height: 100px;
        }

    </style>

</head>
<body>
    <div id="div1">
        <div id="div2">div2</div>
        div1
    </div>
    <a href="javascript:void(0);" id="del">删除子节点</a>
    <a href="javascript:void(0);" id="add">添加子节点</a>
    <!--<input type="button" id="del" value="删除子节点">-->
<script>
    //1.获取超链接
    var element_a = document.getElementById("del");
    //2.绑定单击事件
    element_a.onclick = function(){
        var div1 = document.getElementById("div1");
        var div2 = document.getElementById("div2");
        div1.removeChild(div2);
    }

    //1.获取超链接
    var element_add = document.getElementById("add");
    //2.绑定单击事件
    element_add.onclick = function(){
        var div1 = document.getElementById("div1");
       //给div1添加子节点
        //创建div节点
        var div3 = document.createElement("div");
        div3.setAttribute("id","div3");
        div1.appendChild(div3);
    }


    /*
        超链接功能：
            1.可以被点击：样式
            2.点击后跳转到href指定的url

        需求：保留1功能，去掉2功能
        实现：href="javascript:void(0);"
     */

    var div2 = document.getElementById("div2");
    var div1 = div2.parentNode;
    alert(div1);

</script>
</body>
</html>